bailey



(No Model.) 2 Sheets-Sheet J. W. BAILEY.

ORE PULVBRIZING AND AMALGAMATING MILL.

N0. 321,937. Patented July 14, 1885.

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N. PEIEHS. Phemumngmpher, wnmmgtun. D. C.

(No Model.) 2 Sheets-Sheet 2.v

J. W. BAILEY.

ORE PULVERIZING AND AMALGAMATING MILL.

N0. 321,937. Patented July 14, 1885.

will" e flare/Z201? f DNTTnn STATES PATENT Trice.

JOHN XV. BAILEY, OF DENVER, COLORADO.

ORE PULVERIZING AND AMALGAMATING iVilLL.

SECIFICATION forming part of Letters Patent No. 321,937, dated July 14,1885.

Application filed September 15, 1884. (Xo model.)

TQ all whom, it rmi/,y concern:

Be it known that I, JOHN W. BAILEY, of Denver, in the county of Arapahoeand State of Colorado, have invented certain new and useful Improvementsin Ore Pulverizing and Amalgamating Mills, of which the following is aspecification, reference being had to the accompanying drawings, and tothe letters of reference. marked thereon.

The object of this invention is to effect the pulverization, washing,and discharge of the stock, and the process of amalgamation in a rapidand effective manner by a simple com! bination of devices which shallnot be liable to derangementI and shall be capable of ready repair.

In the accompanying drawings, Figure 1 is a vertical section of myimproved mill, vthe machine being shown in connection with aY portion ofthe driving mechanism. Fig. 2 is a similar section showing a modifiedconstruction. Fig. 3 is a sectional plan'..` Fig. 4 is a sectional planshowing a modification. Fig. 5 shows a detail ot the driving mechanism.

Similar letters of reference indicate similar parts in the respectivefigures.

Ais apan, heavily constructed of metal, and secured to timbers a bybolts a. Within the lower part of the pan are the vertical andhorizontal rings c a, which are of chilled or hardened metal, and soconstructed or composed as to withstand violent shocks and wear.

B is the muller, heavily constructed of castiron, and provided with anexterior annular band, b, of chilled or hardened metal. The mullerproper is of cylindrical formation, and provided with a centralcylindrical eXtension, c.

Across the top of the pan is a bar, C, securely bolted to the pan, asshown. The central portion of the bar is provided with a sphericalsocket, d, which forms the fulcrum of a lever, D. The end of the shortarm has a ball end which rests within aspherical socket formed withinthe extension c of the muller. r[he long arm ofthe lever D passesthrough a slot, c, of a wheel, c', adapted to revolve with a verticalshaft, c, by means of a pulley, e, the shaft c being suitably supportedby bearings e A weight, c5, is secured tothe upper portion of the longarm of the lever D, said weight being adjustable thereon by means of aset-screw, f.

F is a circular dish-shaped amalgamated copper plate, the upper portionor edge of y which is attached near the upper edge of the pan, the loweror smaller portion ofthe plate surrounding the vertical extension c o'the muller.

About on a level with the top edge of the circular plate F is a pipe, G,terminating ina spout, G, leading to an outer copper amalgamated plate,H, which in turn leads to the sluice-boX I.

A hopper or funnel, K, is placed at the eX- terior of the pan A, and isprovided with an inclined pipe, K', passing through the pan and adaptedto discharge under the circular plaie F and upon the upper surface ofthe muller.

A discharge-pipe, L, leads from the lower portion of the pan.

In Fig. 2 the motion is imparted directly to the muller by a connectionofthe muller by a pin, e, with the slot e in the wheel e', the lever Dbeing dispensed with.

In Fig. 4 a double crushing-surface is shown, a loose ring, a, beingplaced so as to surround the muller. A series of loose rings may beemployed, if desired, the crushing-surface being thus capable ofincrease in area.

The action of the weight c5 (shown in Fig. l) is to increase the forceexerted by the muller, the weight being thrown out by centrifugalaction, and, in consequence, violently forcing the muller against thevertical ring a.

The spout L is used for drawing off the gold or precious metals whichsettle at the bottom ofthe pan, and for discharging the contents whencleaning up.

The operation is as follows: rlhe ore and Water are fed from the hopperor funnel K through the incline pipe K beneath the eircular amalgamatedcopper plate F. Motion having been imparted to the driving-pulley 6',the periphery of the muller is caused to move rapidly against thevertical ring a, the muller resting and sliding upon the horizontal ringall/Il.

is to allow freedom to the long arm of the lever D, and to permit shocksto be given by the muller against the vertical ring a without injury tothe lever and connected parts.

r[he function of the slot e in the wheel c It the muller has a diameterof three feet, [ive hundred revolutions per minute given to thedriving-shaft will cause the band b of the muller to move upon the ringc at the rate of four thousand iive hundred feet per minute. The speedcan be increased by the use ef a muller of greater diameter. rl`hemovement given tothe muller is not only a rotary, but a rollingmovement, and its crushing capacity upon the stock which finds its waybetween the band band vertical ring a, and under the muller, and betweenit and the horizontal ring c', is very great. The wearing-surfaces canbe readily removed and other parts substituted for those worn. Theamalgamation takes place in the usual manner, the metals settlingbeneath the muller B and adhering to the circular amalga mated copperplate F, and the outside amalgamated copper plate, H, over which thedischarged pulp runs to the sluice box I. The pulverization continues inthe bottom of the pan until the dross is tine enough to float in thecurrent of water passing in at the pipe IC, and out, as indicated by thearrows, through the circular plate F and discharge pipe G. The quartz,earthy matter, and the sulphurcts, all ot' which are brittle-such asiron, lead, &c.-are crushed to a line powder, while the gold or otherprecious metal, being duetile, is not pulverized, and by its superiorgravity will not float, being thereby saved by the action of gravitationand by amalgamation. Nal ive silver is saved in the same way. Chlorides,oxides, &c., of silver may also be saved by the use of hot water andchemicals, in order to change them to the metallic state while underprocesses of pulverization.

The machine is simple and effectiveand all the parts subject to wear canbe readily replaced. Pulverization to a tine degree is produced, whichis necessary to a close extraction ot' the precious metals.

Having described my invention, I claiml. The combination, in anore-pulverizing mill, of a cylindrical pan, a cylindrical muller, andmeans for rotating it about an eccentrically-shifting vertical axis androlling it in a horizontal plane around and against the inner sides ofthe cylindrical pan, whereby the plane of the muller is at all timeshorizontal with relation to the axial line of the pan` and the axis ofthe muller during its rotation is ever changing its relation to theaxial center ot the pan, substantially as set forth.

2. In an ore-pulverizing mill, a cylindrical pan having vertical andhorizontal bearingplates at or near its lower portion, and a cylindricalmuller having a hardened pcripheral band adapted to impinge in ahoiizontal direction against the said vertical plate of the pan,combined with means for rotating the muller about aneecentrically-shifting vertical axis and rolling it ina horizontal planearound and against the inner sides of 5 the pan, substantially as setforth.

3. In an ore-pulverizing mill, a cylindrical pan, a bar across the topof said pan having a spherical socket, a. cylindrical muller within thesaid pan, a lever having its fulcrum in the cylindrical socket ofthebar, and its short arm connected by a ball-and-socket joint with themuller, combined with a revoluble driving-shaft carrying a wheel unitedby a slotted connection with thelong arm of the lever, substantially asset forth.

4. In an ore-pulverizing mill, a cylindrical pan having vertical andhorizontal bearing-plates at or near its lower portion, abar or supportacross the top of said pan having a spherical socket, a cylindricalmuller within said pan, a lever having its fulcrum in the sphericalsocket of the bar, and its short arm connected by a ball-and-sockctjoint with the muller, combined with a revoluble driving-shaft carryingawheel united by a slotted connection with the long arm of the lever,substantially as set forth.

5. In an ore pulverizing and amalgamating mill, a cylindrical pan,acylindrical muller, mechanism for revolving and rolling said mullerwithin the pan, and a dish -shaped amalgamated copper plate within thepan, open at its lower end, combined with an inlet-pipe dischargingbelow said plate, and an outlet-pipe discharging above it, substantiallyas set forth.

6. In an ore-pulverizing mill, a cylindrical pan, a cylindrical muller'adapted to bc rotated within and rolled around said pan, combined with aloose ring, or series of rings, surrounding said muller, and adapted tobe rcmoved from the pan, substantially as set forth.

7. The combination, in an orepnlverizing mill, of a cylindrical pan, acylindrical muller, a lever having a ball-and-socket fulcrum in asupport attached to the pan, the short arm oi' said lcverbeing united bya balland-socket `joint with the muller, and thelong` arm with arcvoluble driving-wheel, substantially as set forth.

8. The combination of a cylindrical pan, a cylindrical muller, a leverconnected with said muller and having its fnlcrnm in a support attachedto the pan, the short arm ol' the lever being connected to the nmller,and the long arm ot' said lever being weighted and connected to arevoluble driving shaft, substantially as set forth.

9. In an ore pulverizing and amalgamating mill, the combination of a panhaving a lower discharge-pipe, a dish-shaped amalgamated copper plate,an inlet below said plate, vertical and horizontal bearing-plates, adischarge-pipe above said amalgamatcd copper plate, a cylindricalmuller, and means for revolving said muller about a shifting verticalaxis and rolling its periphery against the vertical bearing-surface ofthe pan, substantially as set forth.

In testimony whereof I have hereunto set my hand.

Vitnesses: JOI-IN XV. BAILEY.

S. V. FARNUM, A. MIALL.

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